`
{
    "name":"云牧",
    [Symbol.for("sex")]: 1 
}``
{ 
  name: "云牧", 
  'age': 32  
} ``
{
    "name": "云牧",
    "age": undefined 
}``[-10, 0xDDFF]``
{ 
  "name": "牙膏",
  "created": new Date(),  
  "price": 18
  "getPrice": function() { 
      return this.price;
  }
}``
{
   "name":"云牧",
   "age": 32, 
}
`;
